Centralized Receiving Unit for Multi-Terminal Serial Control
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Solution Overview
Problem
Existing satellite television systems are not economical for low-end installations requiring only a modest number of receivers, as they are designed for large-scale applications and lack efficient control mechanisms for individual terminal tuning and management in settings like hotels, vehicles, and small commercial spaces.
Innovation Solution
A system that includes a receiving unit capable of converting command signals into serial port control signals to control multiple terminals, allowing for simultaneous tuning and management of terminals in local systems, such as those within buildings or vehicles, by formatting and communicating these signals to terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If individual terminal control is implemented in multi-terminal systems, then each terminal can be tuned independently, but the time required for tuning increases significantly when many terminals are involved
Solution Approach 1:
The system segments control functionality by introducing a central receiving unit that handles control signals for multiple terminals collectively, rather than requiring individual control for each terminal. This segmentation allows batch processing of tuning operations across multiple terminals simultaneously, reducing overall tuning time while maintaining individual terminal controllability through the centralized unit
Solution Approach 2:
The receiving unit acts as an intermediary between the control source and multiple terminals. It receives control signals, converts them to serial port control signals, formats them appropriately, and distributes them to multiple terminals. This intermediary approach enables efficient batch control operations that would be time-consuming if performed individually at each terminal
2Quantity of substance
If IP encapsulated bitstream distribution is used for large installations, then hundreds of simultaneous users can be supported, but the system becomes too complex and expensive for low-end installations requiring only a modest number of receivers
Solution Approach 1:
The system applies local quality by providing different distribution architectures for different installation scales. For low-end installations with a modest number of receivers, it uses a simplified SMATV approach with serial port control signals. For large installations, it can scale to IP encapsulated bitstream distribution. This allows the system to be economically optimized for each specific application scenario rather than forcing a one-size-fits-all complex IP-based solution
Solution Approach 2:
The system changes operational parameters based on installation scale. It can operate in a simplified mode for small installations with fewer terminals using basic serial control, and scale to support hundreds of users with IP encapsulation when needed. The receiving unit can adapt its signal processing and distribution capabilities based on the number of terminals and requirements, allowing economical deployment across different market segments
3Adaptability or versatility
If a set top box capable of converting IP stream to usable signals is used, then basic service can be provided to low-end applications, but the cost and complexity increase compared to simpler SMATV systems
Solution Approach 1:
The receiving unit provides multi-functionality by serving dual purposes: it can handle simple SMATV serial port control signals for basic installations, and also process IP encapsulated bitstreams for larger installations. This universal capability allows the same hardware platform to serve different market segments without requiring separate set-top boxes for each application type, reducing overall system complexity and cost
Data Source
AI summary
A method and system for controlling a terminal includes a receiving unit in communication with the plurality of terminals receiving a command signal and converting the command signal to a serial port control signal. The receiving unit formats the serial port control signal to form a formatted signal. A terminal device receives the formatted signal, recovers the serial port control signal from the formatted signal and controls a terminal device in response to the serial port control signal.